Tudor · Black Bay Chrono S&G · 41mm · gold bezel · leather bund strap · on Amazon
The two-tone Black Bay Chrono on the bund strap. The cheapest S&G here.
This is the same steel-and-gold Black Bay Chrono on Tudor’s brown leather bund strap: reference M79363N-0002, a 41mm steel case with a solid 18k yellow gold bezel carrying a black tachymeter disc, solid gold crown and pushers, a black domed dial with two gilt-edged counters and snowflake hands, the date at six, on a brown leather bund strap with contrast stitching. Inside is the manufacture MT5813, a column-wheel chronograph with about 70 hours of reserve and a COSC certificate; 200 metres. The least expensive Black Bay Chrono S&G on this page, from a marketplace seller on Amazon.

Case
41mm, 14.4mm thick, 22mm lugs, steel with polished and satin finish, fixed solid 18k yellow gold bezel with matt black anodised aluminium tachymeter disc, solid yellow gold screw-down crown and pushers, 200m
Listing: 41mm, 200m; Tudor M79363N
Movement
Tudor manufacture calibre MT5813, automatic column-wheel chronograph, COSC, about 70 h
Listing: automatic; Tudor
Dial
Black, domed, gilt-edged counters (45 minutes at 3, small seconds at 9), luminous markers, snowflake hands, date at 6
Listing: black dial; photograph; Tudor
Strap
Brown leather bund strap with contrast stitching and buckle
Listing: leather band; photograph; Tudor
Reference
M79363N-0002
Listing title and model row
Seller
MS-TR JAPAN, marketplace seller; in stock; 30-day returns; condition not stated
Amazon buy box, 2026-09-14
Steel and gold, on a bund
S&G is Tudor’s shorthand for steel and gold: a steel case with a solid yellow gold bezel, crown and, on the chronograph, pushers. On the Black Bay Chrono S&G the bezel is solid 18k yellow gold with a black aluminium tachymeter disc, and the black dial with gilt-edged counters picks it up. It is the dressiest Black Bay Chrono, and on a strap it costs less than the steel one on a bracelet.
A bund strap is a leather pad under the watch with the strap running over it, a 1960s pilot’s idea Tudor revived for the Black Bay Chrono; it keeps the caseback off the wrist and makes the watch sit higher and read bigger. Tudor’s version is brown leather with cream stitching, and the gold bezel warms to it. This reference costs less than the fabric version on this page when read, and the seller ships from Japan.

Reading the listing
The listing carries the reference M79363N-0002 in the title and model row and calls it a Black Bay S&G chronograph with a black dial, 41mm, 200 metres and a leather band. The photograph shows the gold bezel, crown and pushers, the two-counter dial and the bund strap. The thickness, lug width, calibre, COSC certification and reserve are Tudor’s published figures for the reference.
The seller is MS-TR JAPAN, a marketplace seller. Ask the seller whether it is new with Tudor’s five-year guarantee card, and for the box; the rows we read do not say. Nothing here was measured on the watch.

Buying it on Amazon
This is a regular Amazon listing from a marketplace seller with Amazon’s 30-day return window; it is not a Luxury Stores pre-owned unit and the seller has not published a condition. The second button opens the live search for Black Bay Chronos in case this one has sold.
Black Bay Chronos have resold for under new and close to what pre-owned buyers paid, sometimes more, sometimes less; that is a pattern, not a promise, and nothing here is investment advice.

Specs
- Reference
- M79363N-0002
- Case size
- 41mm, 14.4mm thick, 22mm lugs
- Case material
- Stainless steel, polished and satin finish; fixed solid 18k yellow gold bezel with matt black anodised aluminium tachymeter disc and yellow gold markings; solid yellow gold screw-down crown and pushers
- Movement
- Tudor manufacture calibre MT5813, automatic column-wheel chronograph, COSC chronometer, bidirectional rotor
- Caliber type
- Tudor manufacture MT5813, COSC
- Crystal
- Domed sapphire crystal
- Water resistance
- 200m (20 ATM)
- Power reserve
- About 70 hours
- Complications
- Chronograph (45 minutes at 3, small seconds at 9), date at 6
- Origin
- Swiss Made
Specifications as published by Tudor. We research from manufacturer documentation and published sources rather than hands-on testing. Researched 2026-09-14.
Verdict
Tudor’s Black Bay Chrono S&G on the brown leather bund strap, the least expensive steel-and-gold Black Bay chronograph on this page, on Amazon from a marketplace seller.
Strengths
- The least expensive Black Bay Chrono S&G here when read
- Solid 18k gold bezel, crown and pushers
- MT5813 column-wheel chronograph, COSC, 70 hours
- Full reference on the listing; Amazon’s return window
Trade-offs
- Condition and guarantee card not stated by the seller; ask
- A bund strap is a look; it can be swapped for any 22mm strap
- 14.4mm thick, and the bund adds height
- MS-TR JAPAN ships from Japan; ask about delivery time
Buy it if
Someone who wants the two-tone Black Bay Chrono at the lowest price and likes the bund look.
Skip it if
You want a bracelet, all steel, or a stated condition.
FAQ
Tudor’s manufacture chronograph calibre, developed from the Breitling 01 in the two brands’ 2017 exchange: column wheel, vertical clutch, silicon hairspring, COSC certified, about 70 hours of reserve, with a 45-minute counter at 3 and small seconds at 9.
Compare
Sources
- Tudor Black Bay Chrono S&G M79363N-0002, official page
- Amazon marketplace listing (MS-TR JAPAN), read 2026-09-14
Researched and last updated 2026-09-14. We do not test watches in hand; every figure above is traceable to the manufacturer or the sources listed here.
Tudor Black Bay Chrono S&G 41mm M79363N-0002 (steel and yellow gold bezel, black dial, brown leather bund strap)
Reference M79363N-0002 · $5,000–$10,000
Prices and availability change; the band above is a research figure, so check the current listing.
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